Merge branch 'master' of git://git.denx.de/u-boot-usb
[platform/kernel/u-boot.git] / common / bootm.c
1 /*
2  * (C) Copyright 2000-2009
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #ifndef USE_HOSTCC
9 #include <common.h>
10 #include <bootstage.h>
11 #include <bzlib.h>
12 #include <errno.h>
13 #include <fdt_support.h>
14 #include <lmb.h>
15 #include <malloc.h>
16 #include <asm/io.h>
17 #include <linux/lzo.h>
18 #include <lzma/LzmaTypes.h>
19 #include <lzma/LzmaDec.h>
20 #include <lzma/LzmaTools.h>
21 #if defined(CONFIG_CMD_USB)
22 #include <usb.h>
23 #endif
24 #else
25 #include "mkimage.h"
26 #endif
27
28 #include <command.h>
29 #include <bootm.h>
30 #include <image.h>
31
32 #ifndef CONFIG_SYS_BOOTM_LEN
33 /* use 8MByte as default max gunzip size */
34 #define CONFIG_SYS_BOOTM_LEN    0x800000
35 #endif
36
37 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
38
39 #ifndef USE_HOSTCC
40
41 DECLARE_GLOBAL_DATA_PTR;
42
43 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
44                                    char * const argv[], bootm_headers_t *images,
45                                    ulong *os_data, ulong *os_len);
46
47 #ifdef CONFIG_LMB
48 static void boot_start_lmb(bootm_headers_t *images)
49 {
50         ulong           mem_start;
51         phys_size_t     mem_size;
52
53         lmb_init(&images->lmb);
54
55         mem_start = getenv_bootm_low();
56         mem_size = getenv_bootm_size();
57
58         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
59
60         arch_lmb_reserve(&images->lmb);
61         board_lmb_reserve(&images->lmb);
62 }
63 #else
64 #define lmb_reserve(lmb, base, size)
65 static inline void boot_start_lmb(bootm_headers_t *images) { }
66 #endif
67
68 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
69                        char * const argv[])
70 {
71         memset((void *)&images, 0, sizeof(images));
72         images.verify = getenv_yesno("verify");
73
74         boot_start_lmb(&images);
75
76         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
77         images.state = BOOTM_STATE_START;
78
79         return 0;
80 }
81
82 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
83                          char * const argv[])
84 {
85         const void *os_hdr;
86         bool ep_found = false;
87         int ret;
88
89         /* get kernel image header, start address and length */
90         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
91                         &images, &images.os.image_start, &images.os.image_len);
92         if (images.os.image_len == 0) {
93                 puts("ERROR: can't get kernel image!\n");
94                 return 1;
95         }
96
97         /* get image parameters */
98         switch (genimg_get_format(os_hdr)) {
99 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
100         case IMAGE_FORMAT_LEGACY:
101                 images.os.type = image_get_type(os_hdr);
102                 images.os.comp = image_get_comp(os_hdr);
103                 images.os.os = image_get_os(os_hdr);
104
105                 images.os.end = image_get_image_end(os_hdr);
106                 images.os.load = image_get_load(os_hdr);
107                 images.os.arch = image_get_arch(os_hdr);
108                 break;
109 #endif
110 #if defined(CONFIG_FIT)
111         case IMAGE_FORMAT_FIT:
112                 if (fit_image_get_type(images.fit_hdr_os,
113                                        images.fit_noffset_os,
114                                        &images.os.type)) {
115                         puts("Can't get image type!\n");
116                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
117                         return 1;
118                 }
119
120                 if (fit_image_get_comp(images.fit_hdr_os,
121                                        images.fit_noffset_os,
122                                        &images.os.comp)) {
123                         puts("Can't get image compression!\n");
124                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
125                         return 1;
126                 }
127
128                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
129                                      &images.os.os)) {
130                         puts("Can't get image OS!\n");
131                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
132                         return 1;
133                 }
134
135                 if (fit_image_get_arch(images.fit_hdr_os,
136                                        images.fit_noffset_os,
137                                        &images.os.arch)) {
138                         puts("Can't get image ARCH!\n");
139                         return 1;
140                 }
141
142                 images.os.end = fit_get_end(images.fit_hdr_os);
143
144                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
145                                        &images.os.load)) {
146                         puts("Can't get image load address!\n");
147                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
148                         return 1;
149                 }
150                 break;
151 #endif
152 #ifdef CONFIG_ANDROID_BOOT_IMAGE
153         case IMAGE_FORMAT_ANDROID:
154                 images.os.type = IH_TYPE_KERNEL;
155                 images.os.comp = IH_COMP_NONE;
156                 images.os.os = IH_OS_LINUX;
157                 images.ep = images.os.load;
158                 ep_found = true;
159
160                 images.os.end = android_image_get_end(os_hdr);
161                 images.os.load = android_image_get_kload(os_hdr);
162                 break;
163 #endif
164         default:
165                 puts("ERROR: unknown image format type!\n");
166                 return 1;
167         }
168
169         /* If we have a valid setup.bin, we will use that for entry (x86) */
170         if (images.os.arch == IH_ARCH_I386) {
171                 ulong len;
172
173                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
174                 if (ret < 0 && ret != -ENOENT) {
175                         puts("Could not find a valid setup.bin for x86\n");
176                         return 1;
177                 }
178                 /* Kernel entry point is the setup.bin */
179         } else if (images.legacy_hdr_valid) {
180                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
181 #if defined(CONFIG_FIT)
182         } else if (images.fit_uname_os) {
183                 int ret;
184
185                 ret = fit_image_get_entry(images.fit_hdr_os,
186                                           images.fit_noffset_os, &images.ep);
187                 if (ret) {
188                         puts("Can't get entry point property!\n");
189                         return 1;
190                 }
191 #endif
192         } else if (!ep_found) {
193                 puts("Could not find kernel entry point!\n");
194                 return 1;
195         }
196
197         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
198                 images.os.load = images.os.image_start;
199                 images.ep += images.os.load;
200         }
201
202         images.os.start = (ulong)os_hdr;
203
204         return 0;
205 }
206
207 static int bootm_find_ramdisk(int flag, int argc, char * const argv[])
208 {
209         int ret;
210
211         /* find ramdisk */
212         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
213                                &images.rd_start, &images.rd_end);
214         if (ret) {
215                 puts("Ramdisk image is corrupt or invalid\n");
216                 return 1;
217         }
218
219         return 0;
220 }
221
222 #if defined(CONFIG_OF_LIBFDT)
223 static int bootm_find_fdt(int flag, int argc, char * const argv[])
224 {
225         int ret;
226
227         /* find flattened device tree */
228         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
229                            &images.ft_addr, &images.ft_len);
230         if (ret) {
231                 puts("Could not find a valid device tree\n");
232                 return 1;
233         }
234
235         set_working_fdt_addr(images.ft_addr);
236
237         return 0;
238 }
239 #endif
240
241 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[])
242 {
243         if (bootm_find_ramdisk(flag, argc, argv))
244                 return 1;
245
246 #if defined(CONFIG_OF_LIBFDT)
247         if (bootm_find_fdt(flag, argc, argv))
248                 return 1;
249 #endif
250
251         return 0;
252 }
253
254 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
255                             char * const argv[])
256 {
257         if (((images.os.type == IH_TYPE_KERNEL) ||
258              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
259              (images.os.type == IH_TYPE_MULTI)) &&
260             (images.os.os == IH_OS_LINUX ||
261                  images.os.os == IH_OS_VXWORKS))
262                 return bootm_find_ramdisk_fdt(flag, argc, argv);
263
264         return 0;
265 }
266 #endif /* USE_HOSTCC */
267
268 /**
269  * decomp_image() - decompress the operating system
270  *
271  * @comp:       Compression algorithm that is used (IH_COMP_...)
272  * @load:       Destination load address in U-Boot memory
273  * @image_start Image start address (where we are decompressing from)
274  * @type:       OS type (IH_OS_...)
275  * @load_bug:   Place to decompress to
276  * @image_buf:  Address to decompress from
277  * @return 0 if OK, -ve on error (BOOTM_ERR_...)
278  */
279 static int decomp_image(int comp, ulong load, ulong image_start, int type,
280                         void *load_buf, void *image_buf, ulong image_len,
281                         ulong *load_end)
282 {
283         const char *type_name = genimg_get_type_name(type);
284         __attribute__((unused)) uint unc_len = CONFIG_SYS_BOOTM_LEN;
285
286         *load_end = load;
287         switch (comp) {
288         case IH_COMP_NONE:
289                 if (load == image_start) {
290                         printf("   XIP %s ... ", type_name);
291                 } else {
292                         printf("   Loading %s ... ", type_name);
293                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
294                 }
295                 *load_end = load + image_len;
296                 break;
297 #ifdef CONFIG_GZIP
298         case IH_COMP_GZIP:
299                 printf("   Uncompressing %s ... ", type_name);
300                 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) {
301                         puts("GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover\n");
302                         return BOOTM_ERR_RESET;
303                 }
304
305                 *load_end = load + image_len;
306                 break;
307 #endif /* CONFIG_GZIP */
308 #ifdef CONFIG_BZIP2
309         case IH_COMP_BZIP2:
310                 printf("   Uncompressing %s ... ", type_name);
311                 /*
312                  * If we've got less than 4 MB of malloc() space,
313                  * use slower decompression algorithm which requires
314                  * at most 2300 KB of memory.
315                  */
316                 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len,
317                         image_buf, image_len,
318                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
319                 if (i != BZ_OK) {
320                         printf("BUNZIP2: uncompress or overwrite error %d - must RESET board to recover\n",
321                                i);
322                         return BOOTM_ERR_RESET;
323                 }
324
325                 *load_end = load + unc_len;
326                 break;
327 #endif /* CONFIG_BZIP2 */
328 #ifdef CONFIG_LZMA
329         case IH_COMP_LZMA: {
330                 SizeT lzma_len = unc_len;
331                 int ret;
332
333                 printf("   Uncompressing %s ... ", type_name);
334
335                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
336                                                image_buf, image_len);
337                 unc_len = lzma_len;
338                 if (ret != SZ_OK) {
339                         printf("LZMA: uncompress or overwrite error %d - must RESET board to recover\n",
340                                ret);
341                         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
342                         return BOOTM_ERR_RESET;
343                 }
344                 *load_end = load + unc_len;
345                 break;
346         }
347 #endif /* CONFIG_LZMA */
348 #ifdef CONFIG_LZO
349         case IH_COMP_LZO: {
350                 size_t size = unc_len;
351                 int ret;
352
353                 printf("   Uncompressing %s ... ", type_name);
354
355                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
356                 if (ret != LZO_E_OK) {
357                         printf("LZO: uncompress or overwrite error %d - must RESET board to recover\n",
358                                ret);
359                         return BOOTM_ERR_RESET;
360                 }
361
362                 *load_end = load + size;
363                 break;
364         }
365 #endif /* CONFIG_LZO */
366         default:
367                 printf("Unimplemented compression type %d\n", comp);
368                 return BOOTM_ERR_UNIMPLEMENTED;
369         }
370
371         puts("OK\n");
372
373         return 0;
374 }
375
376 #ifndef USE_HOSTCC
377 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
378                          int boot_progress)
379 {
380         image_info_t os = images->os;
381         ulong load = os.load;
382         ulong blob_start = os.start;
383         ulong blob_end = os.end;
384         ulong image_start = os.image_start;
385         ulong image_len = os.image_len;
386         bool no_overlap;
387         void *load_buf, *image_buf;
388         int err;
389
390         load_buf = map_sysmem(load, 0);
391         image_buf = map_sysmem(os.image_start, image_len);
392         err = decomp_image(os.comp, load, os.image_start, os.type, load_buf,
393                            image_buf, image_len, load_end);
394         if (err) {
395                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
396                 return err;
397         }
398         flush_cache(load, (*load_end - load) * sizeof(ulong));
399
400         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
401         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
402
403         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
404
405         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
406                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
407                       blob_start, blob_end);
408                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
409                       *load_end);
410
411                 /* Check what type of image this is. */
412                 if (images->legacy_hdr_valid) {
413                         if (image_get_type(&images->legacy_hdr_os_copy)
414                                         == IH_TYPE_MULTI)
415                                 puts("WARNING: legacy format multi component image overwritten\n");
416                         return BOOTM_ERR_OVERLAP;
417                 } else {
418                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
419                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
420                         return BOOTM_ERR_RESET;
421                 }
422         }
423
424         return 0;
425 }
426
427 /**
428  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
429  *
430  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
431  *      enabled)
432  */
433 ulong bootm_disable_interrupts(void)
434 {
435         ulong iflag;
436
437         /*
438          * We have reached the point of no return: we are going to
439          * overwrite all exception vector code, so we cannot easily
440          * recover from any failures any more...
441          */
442         iflag = disable_interrupts();
443 #ifdef CONFIG_NETCONSOLE
444         /* Stop the ethernet stack if NetConsole could have left it up */
445         eth_halt();
446         eth_unregister(eth_get_dev());
447 #endif
448
449 #if defined(CONFIG_CMD_USB)
450         /*
451          * turn off USB to prevent the host controller from writing to the
452          * SDRAM while Linux is booting. This could happen (at least for OHCI
453          * controller), because the HCCA (Host Controller Communication Area)
454          * lies within the SDRAM and the host controller writes continously to
455          * this area (as busmaster!). The HccaFrameNumber is for example
456          * updated every 1 ms within the HCCA structure in SDRAM! For more
457          * details see the OpenHCI specification.
458          */
459         usb_stop();
460 #endif
461         return iflag;
462 }
463
464 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
465
466 #define CONSOLE_ARG     "console="
467 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
468
469 static void fixup_silent_linux(void)
470 {
471         char *buf;
472         const char *env_val;
473         char *cmdline = getenv("bootargs");
474         int want_silent;
475
476         /*
477          * Only fix cmdline when requested. The environment variable can be:
478          *
479          *      no - we never fixup
480          *      yes - we always fixup
481          *      unset - we rely on the console silent flag
482          */
483         want_silent = getenv_yesno("silent_linux");
484         if (want_silent == 0)
485                 return;
486         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
487                 return;
488
489         debug("before silent fix-up: %s\n", cmdline);
490         if (cmdline && (cmdline[0] != '\0')) {
491                 char *start = strstr(cmdline, CONSOLE_ARG);
492
493                 /* Allocate space for maximum possible new command line */
494                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
495                 if (!buf) {
496                         debug("%s: out of memory\n", __func__);
497                         return;
498                 }
499
500                 if (start) {
501                         char *end = strchr(start, ' ');
502                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
503
504                         strncpy(buf, cmdline, num_start_bytes);
505                         if (end)
506                                 strcpy(buf + num_start_bytes, end);
507                         else
508                                 buf[num_start_bytes] = '\0';
509                 } else {
510                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
511                 }
512                 env_val = buf;
513         } else {
514                 buf = NULL;
515                 env_val = CONSOLE_ARG;
516         }
517
518         setenv("bootargs", env_val);
519         debug("after silent fix-up: %s\n", env_val);
520         free(buf);
521 }
522 #endif /* CONFIG_SILENT_CONSOLE */
523
524 /**
525  * Execute selected states of the bootm command.
526  *
527  * Note the arguments to this state must be the first argument, Any 'bootm'
528  * or sub-command arguments must have already been taken.
529  *
530  * Note that if states contains more than one flag it MUST contain
531  * BOOTM_STATE_START, since this handles and consumes the command line args.
532  *
533  * Also note that aside from boot_os_fn functions and bootm_load_os no other
534  * functions we store the return value of in 'ret' may use a negative return
535  * value, without special handling.
536  *
537  * @param cmdtp         Pointer to bootm command table entry
538  * @param flag          Command flags (CMD_FLAG_...)
539  * @param argc          Number of subcommand arguments (0 = no arguments)
540  * @param argv          Arguments
541  * @param states        Mask containing states to run (BOOTM_STATE_...)
542  * @param images        Image header information
543  * @param boot_progress 1 to show boot progress, 0 to not do this
544  * @return 0 if ok, something else on error. Some errors will cause this
545  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
546  *      then the intent is to boot an OS, so this function will not return
547  *      unless the image type is standalone.
548  */
549 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
550                     int states, bootm_headers_t *images, int boot_progress)
551 {
552         boot_os_fn *boot_fn;
553         ulong iflag = 0;
554         int ret = 0, need_boot_fn;
555
556         images->state |= states;
557
558         /*
559          * Work through the states and see how far we get. We stop on
560          * any error.
561          */
562         if (states & BOOTM_STATE_START)
563                 ret = bootm_start(cmdtp, flag, argc, argv);
564
565         if (!ret && (states & BOOTM_STATE_FINDOS))
566                 ret = bootm_find_os(cmdtp, flag, argc, argv);
567
568         if (!ret && (states & BOOTM_STATE_FINDOTHER)) {
569                 ret = bootm_find_other(cmdtp, flag, argc, argv);
570                 argc = 0;       /* consume the args */
571         }
572
573         /* Load the OS */
574         if (!ret && (states & BOOTM_STATE_LOADOS)) {
575                 ulong load_end;
576
577                 iflag = bootm_disable_interrupts();
578                 ret = bootm_load_os(images, &load_end, 0);
579                 if (ret == 0)
580                         lmb_reserve(&images->lmb, images->os.load,
581                                     (load_end - images->os.load));
582                 else if (ret && ret != BOOTM_ERR_OVERLAP)
583                         goto err;
584                 else if (ret == BOOTM_ERR_OVERLAP)
585                         ret = 0;
586 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
587                 if (images->os.os == IH_OS_LINUX)
588                         fixup_silent_linux();
589 #endif
590         }
591
592         /* Relocate the ramdisk */
593 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
594         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
595                 ulong rd_len = images->rd_end - images->rd_start;
596
597                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
598                         rd_len, &images->initrd_start, &images->initrd_end);
599                 if (!ret) {
600                         setenv_hex("initrd_start", images->initrd_start);
601                         setenv_hex("initrd_end", images->initrd_end);
602                 }
603         }
604 #endif
605 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
606         if (!ret && (states & BOOTM_STATE_FDT)) {
607                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
608                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
609                                         &images->ft_len);
610         }
611 #endif
612
613         /* From now on, we need the OS boot function */
614         if (ret)
615                 return ret;
616         boot_fn = bootm_os_get_boot_func(images->os.os);
617         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
618                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
619                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
620         if (boot_fn == NULL && need_boot_fn) {
621                 if (iflag)
622                         enable_interrupts();
623                 printf("ERROR: booting os '%s' (%d) is not supported\n",
624                        genimg_get_os_name(images->os.os), images->os.os);
625                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
626                 return 1;
627         }
628
629         /* Call various other states that are not generally used */
630         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
631                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
632         if (!ret && (states & BOOTM_STATE_OS_BD_T))
633                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
634         if (!ret && (states & BOOTM_STATE_OS_PREP))
635                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
636
637 #ifdef CONFIG_TRACE
638         /* Pretend to run the OS, then run a user command */
639         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
640                 char *cmd_list = getenv("fakegocmd");
641
642                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
643                                 images, boot_fn);
644                 if (!ret && cmd_list)
645                         ret = run_command_list(cmd_list, -1, flag);
646         }
647 #endif
648
649         /* Check for unsupported subcommand. */
650         if (ret) {
651                 puts("subcommand not supported\n");
652                 return ret;
653         }
654
655         /* Now run the OS! We hope this doesn't return */
656         if (!ret && (states & BOOTM_STATE_OS_GO))
657                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
658                                 images, boot_fn);
659
660         /* Deal with any fallout */
661 err:
662         if (iflag)
663                 enable_interrupts();
664
665         if (ret == BOOTM_ERR_UNIMPLEMENTED)
666                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
667         else if (ret == BOOTM_ERR_RESET)
668                 do_reset(cmdtp, flag, argc, argv);
669
670         return ret;
671 }
672
673 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
674 /**
675  * image_get_kernel - verify legacy format kernel image
676  * @img_addr: in RAM address of the legacy format image to be verified
677  * @verify: data CRC verification flag
678  *
679  * image_get_kernel() verifies legacy image integrity and returns pointer to
680  * legacy image header if image verification was completed successfully.
681  *
682  * returns:
683  *     pointer to a legacy image header if valid image was found
684  *     otherwise return NULL
685  */
686 static image_header_t *image_get_kernel(ulong img_addr, int verify)
687 {
688         image_header_t *hdr = (image_header_t *)img_addr;
689
690         if (!image_check_magic(hdr)) {
691                 puts("Bad Magic Number\n");
692                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
693                 return NULL;
694         }
695         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
696
697         if (!image_check_hcrc(hdr)) {
698                 puts("Bad Header Checksum\n");
699                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
700                 return NULL;
701         }
702
703         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
704         image_print_contents(hdr);
705
706         if (verify) {
707                 puts("   Verifying Checksum ... ");
708                 if (!image_check_dcrc(hdr)) {
709                         printf("Bad Data CRC\n");
710                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
711                         return NULL;
712                 }
713                 puts("OK\n");
714         }
715         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
716
717         if (!image_check_target_arch(hdr)) {
718                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
719                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
720                 return NULL;
721         }
722         return hdr;
723 }
724 #endif
725
726 /**
727  * boot_get_kernel - find kernel image
728  * @os_data: pointer to a ulong variable, will hold os data start address
729  * @os_len: pointer to a ulong variable, will hold os data length
730  *
731  * boot_get_kernel() tries to find a kernel image, verifies its integrity
732  * and locates kernel data.
733  *
734  * returns:
735  *     pointer to image header if valid image was found, plus kernel start
736  *     address and length, otherwise NULL
737  */
738 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
739                                    char * const argv[], bootm_headers_t *images,
740                                    ulong *os_data, ulong *os_len)
741 {
742 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
743         image_header_t  *hdr;
744 #endif
745         ulong           img_addr;
746         const void *buf;
747         const char      *fit_uname_config = NULL;
748         const char      *fit_uname_kernel = NULL;
749 #if defined(CONFIG_FIT)
750         int             os_noffset;
751 #endif
752
753         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
754                                               &fit_uname_config,
755                                               &fit_uname_kernel);
756
757         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
758
759         /* copy from dataflash if needed */
760         img_addr = genimg_get_image(img_addr);
761
762         /* check image type, for FIT images get FIT kernel node */
763         *os_data = *os_len = 0;
764         buf = map_sysmem(img_addr, 0);
765         switch (genimg_get_format(buf)) {
766 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
767         case IMAGE_FORMAT_LEGACY:
768                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
769                        img_addr);
770                 hdr = image_get_kernel(img_addr, images->verify);
771                 if (!hdr)
772                         return NULL;
773                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
774
775                 /* get os_data and os_len */
776                 switch (image_get_type(hdr)) {
777                 case IH_TYPE_KERNEL:
778                 case IH_TYPE_KERNEL_NOLOAD:
779                         *os_data = image_get_data(hdr);
780                         *os_len = image_get_data_size(hdr);
781                         break;
782                 case IH_TYPE_MULTI:
783                         image_multi_getimg(hdr, 0, os_data, os_len);
784                         break;
785                 case IH_TYPE_STANDALONE:
786                         *os_data = image_get_data(hdr);
787                         *os_len = image_get_data_size(hdr);
788                         break;
789                 default:
790                         printf("Wrong Image Type for %s command\n",
791                                cmdtp->name);
792                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
793                         return NULL;
794                 }
795
796                 /*
797                  * copy image header to allow for image overwrites during
798                  * kernel decompression.
799                  */
800                 memmove(&images->legacy_hdr_os_copy, hdr,
801                         sizeof(image_header_t));
802
803                 /* save pointer to image header */
804                 images->legacy_hdr_os = hdr;
805
806                 images->legacy_hdr_valid = 1;
807                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
808                 break;
809 #endif
810 #if defined(CONFIG_FIT)
811         case IMAGE_FORMAT_FIT:
812                 os_noffset = fit_image_load(images, img_addr,
813                                 &fit_uname_kernel, &fit_uname_config,
814                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
815                                 BOOTSTAGE_ID_FIT_KERNEL_START,
816                                 FIT_LOAD_IGNORED, os_data, os_len);
817                 if (os_noffset < 0)
818                         return NULL;
819
820                 images->fit_hdr_os = map_sysmem(img_addr, 0);
821                 images->fit_uname_os = fit_uname_kernel;
822                 images->fit_uname_cfg = fit_uname_config;
823                 images->fit_noffset_os = os_noffset;
824                 break;
825 #endif
826 #ifdef CONFIG_ANDROID_BOOT_IMAGE
827         case IMAGE_FORMAT_ANDROID:
828                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
829                 if (android_image_get_kernel(buf, images->verify,
830                                              os_data, os_len))
831                         return NULL;
832                 break;
833 #endif
834         default:
835                 printf("Wrong Image Format for %s command\n", cmdtp->name);
836                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
837                 return NULL;
838         }
839
840         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
841               *os_data, *os_len, *os_len);
842
843         return buf;
844 }
845 #else /* USE_HOSTCC */
846
847 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
848 {
849         memmove(to, from, len);
850 }
851
852 static int bootm_host_load_image(const void *fit, int req_image_type)
853 {
854         const char *fit_uname_config = NULL;
855         ulong data, len;
856         bootm_headers_t images;
857         int noffset;
858         ulong load_end;
859         uint8_t image_type;
860         uint8_t imape_comp;
861         void *load_buf;
862         int ret;
863
864         memset(&images, '\0', sizeof(images));
865         images.verify = 1;
866         noffset = fit_image_load(&images, (ulong)fit,
867                 NULL, &fit_uname_config,
868                 IH_ARCH_DEFAULT, req_image_type, -1,
869                 FIT_LOAD_IGNORED, &data, &len);
870         if (noffset < 0)
871                 return noffset;
872         if (fit_image_get_type(fit, noffset, &image_type)) {
873                 puts("Can't get image type!\n");
874                 return -EINVAL;
875         }
876
877         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
878                 puts("Can't get image compression!\n");
879                 return -EINVAL;
880         }
881
882         /* Allow the image to expand by a factor of 4, should be safe */
883         load_buf = malloc((1 << 20) + len * 4);
884         ret = decomp_image(imape_comp, 0, data, image_type, load_buf,
885                            (void *)data, len, &load_end);
886         free(load_buf);
887         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
888                 return ret;
889
890         return 0;
891 }
892
893 int bootm_host_load_images(const void *fit, int cfg_noffset)
894 {
895         static uint8_t image_types[] = {
896                 IH_TYPE_KERNEL,
897                 IH_TYPE_FLATDT,
898                 IH_TYPE_RAMDISK,
899         };
900         int err = 0;
901         int i;
902
903         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
904                 int ret;
905
906                 ret = bootm_host_load_image(fit, image_types[i]);
907                 if (!err && ret && ret != -ENOENT)
908                         err = ret;
909         }
910
911         /* Return the first error we found */
912         return err;
913 }
914
915 #endif /* ndef USE_HOSTCC */